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Home >> Toyota >> 1984 >> 4Runner Base >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - BOSCH AFC >> Testing >> Fuel Pump Circuit
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Fuel Pump Circuit

  1. Turn ignition "ON". Remove cap from fuel pump test connector. Using a jumper wire, jump both terminals of connector. Connector is located below air flow meter on Camry, Cressida, and Supra models. On Celica models it is located next to the throttle body. Starlet check connector is on wiring harness on left side of engine.
  2. Fuel pressure should be felt at cold start injector hose and noise of fuel returning to tank should be heard at fuel pressure regulator.
  3. Remove jumper wire, install connector cap and turn ignition "OFF". If none of the above conditions were met, check fusible link, engine fuse, fuel injection fuse, circuit opening relay, fuel pump, and all electrical connectors.
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